| 拦减粗泥沙对下游河道的减淤效果 |
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| 引用本文： | 申冠卿,李勇,岳德军,韩巧兰,周文治.拦减粗泥沙对下游河道的减淤效果[J].人民黄河,2000,22(6):13-15. |
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| 作者姓名： | 申冠卿 李勇 岳德军 韩巧兰 周文治 |
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| 作者单位： | 1. 黄河水利科学研究院,河南,郑州,450003
2. 豫东水利工程管理局,河南,开封,475002 |
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| 基金项目： | 国家重大自然科学基金和水利部联合资助项目!(59890 2 0 0 ) |
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| 摘 要： | 以实测资料为依据，结合数学模型，重点探讨了粗细泥沙在三门峡汇流区及黄河下游河道的调整机理。计算分析表明，拦减粗泥沙对汇流区与黄河下游的减淤量比值约为０．５，其减淤效果主要在下游，对下游而言，１９７４￣１９９９年若将进入下游的粗泥沙含量控制在１５％￣２０％，则减淤比变化范围为０．６５￣０．８０，且减少的主要为粗颗粒泥沙。
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| 关 键 词： | 粗泥沙 减淤 泥沙调整 黄河下游 河道淤积 |
Effect of Retaining Coarse Sediment on Sedimentation Reduction in the Lower Yellow River |
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| SHEN Guan qing,LI Yong,YUE De jun,et al..Effect of Retaining Coarse Sediment on Sedimentation Reduction in the Lower Yellow River[J].Yellow River,2000,22(6):13-15. |
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| Authors: | SHEN Guan qing LI Yong YUE De jun |
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| Abstract: | The regulation mechanism of coarse and fine sediment in Sanmenxia confluence region and in the lower Yellow River is studied as the key issue on the basis of recorded data and combining with mathematical model. The analysis and calculation show that detention of coarse sediment will result in the ratio of 0.5 to the sedimentation reduction respectively for the confluence region and the lower Yellow River, therefore, the main effect of sedimentation reduction is in the lower Yellow River. If coarse sediment concentration of entering to the lower Yellow River had been controlled between 15?% to 20?% from 1974 to 1990, there would have been the ration of sedimentation reduction of 0.65 to 0.80 and with mainly decreased coarse sediment in the lower Yellow River. |
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| Keywords: | coarse sediment sedimentation reduction sediment composition sediment regulation the lower Yellow River |
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